Matches 1 - 41 out of 41
Match Document Document Title
7048080 Roller cone bits with wear and fracture resistant surface  
Roller cone bits include a steel bit body having a leg extending therefrom. A steel cone is disposed on the leg and includes steel cutting elements projecting outwardly therefrom. One of the...
6615935 Roller cone bits with wear and fracture resistant surface  
Rock bits comprising wear and fracture resistant surface of this invention include a steel bit body having at least one leg extending therefrom. A steel cone is rotatably disposed on the leg. The...
6547017 Rotary drill bit compensating for changes in hardness of geological formations  
A long lasting rotary drill bit for drilling a hole into variable hardness geological formations that has a self-actuating mechanism responsive to the hardness of the geological formation to...
6360832 Hardfacing with multiple grade layers  
An earth-boring bit has hardfacing that has multiple grades and an overlapped portion. One of the layers is of a different grade than the other so as to provide more wear resistance. The other...
6347676 Tooth type drill bit with secondary cutting elements and stress reducing tooth geometry  
Disclosed is a tooth type rolling cutter earth boring drill bit with secondary cutting elements on the tooth surfaces. The secondary cutting elements provide additional, relatively sharp edges that...
6338621 Volume reduction mandrel for use in pneumatic isostatic forging  
A densified sintered product, such as a rolling cutter adapted for use in a steel tooth rolling cutter earth boring bit, has a layer of a metal powder applied to the external surface of the...
6220374 Rotary cone drill bit with enhanced thrust bearing flange  
The present invention allows the load-bearing capabilities of a drill bit thrust flange to be increased. The invention utilizes a thrust flange that is larger than the inside diameter of an...
RE37127 Hardfacing composition for earth-boring bits  
A hardfacing composition comprises at least 60% by weight of hard metal granules including a quantity of sintered carbide pellets and a quantity of cast carbide pellets. The cast and sintered...
6206116 Rotary cone drill bit with machined cutting structure  
A rotary cone drill bit is provided with at least one cutter cone assembly having a machined cutting structure which will maintain an effective cutting profile despite abrasion, erosion and/or wear...
6171222 Rolls for metal shaping  
Rolls for metal shaping have at least a peripheral surface of an iron-based Fe--B or Fe--B--C cast alloy having from 1 to 20 wt % chromium; from 0.5 to 3 wt % boron; up to 1.0 wt % carbon; or...
6170583 Inserts and compacts having coated or encrusted cubic boron nitride particles  
An insert is provided for a rock bit for drilling bore holes in the ground and other downhole tools. The cutting portion of the inserts consist of encrusted cubic boron nitride pellets, tungsten...
6138779 Hardfacing having coated ceramic particles or coated particles of other hard materials placed on a rotary cone cutter  
Hardfacing to protect wear surfaces of drill bits and other downhole tools having coated cubic boron nitride particles or coated particles of other ceramic, superabrasive or superhard materials...
6135218 Fixed cutter drill bits with thin, integrally formed wear and erosion resistant surfaces  
A fixed-cutter drill bit for boring through earth has a body made predominately of high strength steel with thin erosion and abrasion resistant surfaces integrally formed in the steel in areas...
6102140 Inserts and compacts having coated or encrusted diamond particles  
The improved insert for a ground engaging tool, with a plurality of sockets for receiving a respective insert comprises a body having first and second portions and first and second zones. The first...
6060016 Pneumatic isostatic forging of sintered compacts  
A densified sintered product, such as a rolling cutter adapted for use in a steel tooth rolling cutter earth boring bit, has a layer of a metal powder applied to the external surface of the...
6045750 Rock bit hardmetal overlay and proces of manufacture  
Methods of forming a new wear and abrasion overlay formed with the steel surfaces of components for earth boring bits, and the components formed by the methods are disclosed. The overlay comprises...
6029759 Hardfacing on steel tooth cutter element  
A steel tooth particularly suited for use in a rolling cone bit includes a parent metal core having an inner gage facing surface, leading and trailing edges, a root region adjacent to the cone and...
5988302 Hardmetal facing for earth boring drill bit  
A steel tooth rolling cutter earth boring drill bit includes a bit body with a threaded upper end for attachment to the end of a drill string, and a lower end including three legs extending...
5967248 Rock bit hardmetal overlay and process of manufacture  
Methods of forming a new wear and abrasion overlay formed with the steel surfaces of components for earth boring bits, and the components formed by the methods are disclosed. The overlay comprises...
5961185 Shielded cutterhead with small rolling disc cutters  
An improved disc type rolling rock cutter, and novel cutterheads employing such cutters. A rock cutter with an improved, simplified structure, with compact bearing, and smooth, rounded blade shape...
5904211 Disc cutter and excavation equipment  
An improved disc type rolling rock cutter, and novel cutterheads employing such cutters. A rock cutter with an improved, simplified structure, with compact bearing, and smooth, rounded blade shape...
EP0909869A2 Hardmetal overlay for earth boring bit  
Methods of forming a new wear and abrasion overlay (42) formed with the steel surfaces of components (41) for earth boring bits, and the components formed by the methods are disclosed. The overlay...
5836409 Monolithic self sharpening rotary drill bit having tungsten carbide rods cast in steel alloys  
A monolithic long lasting rotary drill bit for drilling a hole into a geological formation having at least one hardened rod which has a length of at least three times its diameter composed of hard...
5755299 Hardfacing with coated diamond particles  
Hardfacing to protect wear surfaces of drill bits and other downhole tools having coated diamond particles dispersed within and bonded to a metallic matrix deposit. The coating on the diamond...
5755298 Hardfacing with coated diamond particles  
Hardfacing to protect wear surfaces of drill bits and other downhole tools having coated diamond particles dispersed within and bonded to a metallic matrix deposit. The coating on the diamond...
5746861 Method of manufacturing a structural portion of a construction machine  
Past assemblies for structural portions of construction machines utilized advanced fixturing devices and welding to join the components. The fixturing devices are expensive and, if not used,...
5743033 Earthworking machine ground engaging tools having cast-in-place abrasion and impact resistant metal matrix composite components  
A ground engaging tool for an earthworking machine comprises a ground engaging element with a cast-in-place metal matrix composite component. The ground engaging element comprises a metal base...
5740872 Hardfacing material for rolling cutter drill bits  
A material for applying hardfacings to the teeth of steel tooth rolling cutter drill bits comprises a mixture of refractory metal carbide, such as tungsten carbide, cobalt and metallic matrix...
5663512 Hardfacing composition for earth-boring bits  
A hardfacing composition comprises at least 60% by weight of hard metal granules including a quantity of sintered carbide pellets and a quantity of cast carbide pellets. The cast and sintered...
5653299 Hardmetal facing for rolling cutter drill bit  
A steel tooth rolling cutter earth boring drill bit comprises a bit body with a threaded upper end for attachment to the end of a drill string, and a lower end comprising three legs extending...
5644956 Rotary drill bit with improved cutter and method of manufacturing same  
A rotary cone drill bit for forming a borehole having a body with an underside and an upper end portion adapted for connection to a drill string. The drill bit rotates around a central axis of the...
5579856 Gage surface and method for milled tooth cutting structure  
A milled tooth (22) is provided having a back face (38), including an upper back face surface (58) and a lower back face surface (60). A tip or top surface (36) is provided below the upper back...
5518077 Rotary drill bit with improved cutter and seal protection  
A rotary cone drill bit for forming a borehole having a body with an underside and an upper end portion adapted for connection to a drill string. The drill bit rotates around a central axis of the...
5492186 Steel tooth bit with a bi-metallic gage hardfacing  
An earth boring bit rotatable cutter having a first hardfacing composition of carbide particles selected from the class of cast and macrocrystalline tungsten carbide dispersed in a steel matrix...
5452771 Rotary drill bit with improved cutter and seal protection  
A rotary cone drill bit for forming a borehole having a body with an underside and an upper end portion adapted for connection to a drill string. The drill bit rotates around a central axis of the...
5429200 Rotary drill bit with improved cutter  
A rotary cone drill bit for forming a borehole having a body with an underside and an upper end portion adapted for connection to a drill string. The drill bit rotates around a central axis of the...
5294382 Method for control of resistivity in electroconsolidation of a preformed particulate workpiece  
The present invention comprises an improved method of controlling resistivity in a process for consolidating particular materials or combinations of such materials into shaped products of very low...
5279374 Downhole drill bit cone with uninterrupted refractory coating  
Drill bits having projecting inserts are completely coated with refractory material including on the edge margins about the inserts by thermally spraying with refractory particles whose particulate...
5032352 Composite body formation of consolidated powder metal part  
The method of consolidating a powder material to form a composite part includes forming a pattern which is a scaled-up version of the part to be formed; employing the pattern to produce a flexible...
4886710 Mining/construction tool bit having bit body fabricated from Mn-B steel alloy composition  
A mining and construction bit body is composed of a Mn-B steel alloy composition. The alloy content of the composition in percents by weight includes: carbon, 0.33-0.38; manganese, 1.10-1.35;...
4679640 Method for case hardening rock bits and rock bits formed thereby  
In the method of manufacturing case hardened rock bits formed of a previously known conical profile for containing spaced apart cutter inserts in a common circumferential row about the cone,...
Matches 1 - 41 out of 41